Re: Some experience with the igc branch

[Paul Eggert]

On 12/29/24 11:20, Eli Zaretskii wrote:
> if a non-main thread's Lisp function keeps running forever,
> never calling any primitives that release the lock, that thread will
> run forever, and the main thread will never get a chance.  Lisp
> programs that cause this are considered buggy, of course.
>
> > I don't see this issue documented explicitly in doc/elisp/threads.texi.
> > Should it be?
> I will have an opinion when I better understand what "it" is in this
> case.  I hope this is just a misunderstanding.

It's the issue summarized in your paragraph that I quoted above, along 
with its consequences, which are obvious to someone who knows how Emacs 
Lisp threads work but not so obvious to newcomers who may have several 
notions of "threads" rattling around in their heads.

It's not just that the main thread never gets a chance: it's that 
signals are effectively ignored.

Does the same thing happen with C-g? If so, I'd think that should also 
be documented in threads.texi.